K
Kerstin Worhoff
Researcher at MESA+ Institute for Nanotechnology
Publications - 186
Citations - 3213
Kerstin Worhoff is an academic researcher from MESA+ Institute for Nanotechnology. The author has contributed to research in topics: Laser & Waveguide (optics). The author has an hindex of 28, co-authored 186 publications receiving 2893 citations.
Papers
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Energy-transfer-upconversion models, their applicability and breakdown in the presence of spectroscopically distinct ion classes: A case study in amorphous Al2O3:Er3+
TL;DR: In this paper, the influence of energy migration and energy-transfer upconversion (ETU) among neighboring Er3+ ions on luminescence decay and steady-state population densities in Al2O3:Er3+ thin films is investigated by means of photolumine decay measurements under quasi-CW excitation.
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Analysis of generalized Mach-Zehnder interferometers for variable-ratio power splitting and optimized switching
TL;DR: In this article, a nonideal integrated optical N/spl times/N generalized Mach-Zehnder interferometer (GMZI) employing multimode interference couplers is analyzed using transfer matrix techniques.
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Stimulated emission and optical gain in LaF3:Nd nanoparticle-doped polymer-based waveguides
Ronald Dekker,D.J.W. Klunder,A. Borreman,Mart Diemeer,Kerstin Worhoff,Ann Driessen,J.W. Stouwdam,F.C.J.M. van Veggel +7 more
TL;DR: In this article, the authors showed that optical gain in the order of 10 dB can be achieved at 100 mW pump power in a 20 cm long monomode waveguide with LaF3 nanoparticle-doped polymethylmethacrylate (PMMA) as a top cladding material.
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Spectral domain optical coherence tomography imaging with an integrated optics spectrometer
V. Duc Nguyen,B. Imran Akca,Kerstin Worhoff,René M. de Ridder,Markus Pollnau,Ton G. van Leeuwen,Jeroen Kalkman +6 more
TL;DR: Using the AWG spectrometer combined with a fiber-based SD-OCT system, it is demonstrated cross-sectional OCT imaging of a multilayered scattering phantom.
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Erbium-doped spiral amplifiers with 20 dB of net gain on silicon
Sergio A. Vázquez-Córdova,Meindert Dijkstra,Edward H. Bernhardi,Feridun Ay,Kerstin Worhoff,Jennifer Lynn Herek,Sonia M. García-Blanco,Markus Pollnau +7 more
TL;DR: Spiral-waveguide amplifiers in erbium-doped aluminum oxide on a silicon wafer are fabricated and characterized and Gain saturation as a result of increasing signal power and the temperature dependence of gain are studied.